Housed in a historic hotel in the Colonial heart of Odessa, Cantwell’s Tavern (109 Main St., 376-0600) started drawing locals and visitors from far and wide as soon as it opened two years ago. Tradition is part of the draw. The dining rooms and bar areas feature replicas of period furnishings and the architectural details of the day. The menu also features touches of tradition, such as good beer-battered fish and chips.